Introduction of statistics

What is the primary purpose of statistics?

• To randomly guess results

• To collect, analyze, and interpret data

• To make numbers look interesting

• To replace experiments

Which of the following is an example of Descriptive Statistics?

• Students who study more tend to score higher

• The more coffee you drink, the less you sleep

• The average score of students in a test is 75%

• A hypothesis stating online learning improves grades

What is Inferential Statistics used for?

• Organizing raw data into tables

• Making predictions or conclusions from a sample

• Listing all student grades in a class

• Counting the number of students in a university

Which of the following is an example of Quantitative Data?

• The brand of a smartphone

• The type of operating system

• The weight of a laptop (in kg)

• A student's favorite color

A researcher surveys 500 people to estimate the average income of Malaysians. What is this an example of?

• Sampling

• Population

• Census

• Nominal Data